<el-form-item label="附件" prop="attachment">

              <el-upload

                :multiple="false"

                :limit="1"

                :on-exceed="handleExceed"

                :http-request="uploadFiles"

                :on-remove="handleRemoveFj"

                action="  "

              >

                <el-button slot="trigger" size="small" type="primary" >选择文件</el-button>

                <el-button v-show="formData.attachment != null" > <a  :href="'http:/localhost:8080/file'+formData.attachment">查看文件</a></el-button>

              </el-upload>

            </el-form-item>

 //图片上传数量校验

      handleExceed(files, fileList) {

        this.$message.warning(`当前限制选择 1 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);

      },

      //取消上传文件

      handleRemoveFj(file,fileList){

        this.formData.fileContent = null;

      },

      //文件上传

      uploadFiles(data) {

        // this.formData.fileUpdate=1;              //更新状态 改为已更新

        this.formData.fileName = data.file.name;        //文件名

        this.formData.fileType = "updateNoticeFile";

        this.getBase64(data.file).then(resBase64 => {

          this.formData.fileContent = resBase64.split(',')[1]

          console.info(this.formData.fileContent)

          console.info(this.formData.fileContent.length)

        })

      },

      //文件转base64

      getBase64(file) {

        return new Promise((resolve, reject) => {

          let reader = new FileReader();

          let fileResult = "";

          reader.readAsDataURL(file);　　　　　 //开始转

          reader.onload = function() {

            fileResult = reader.result;

          };　　　　　 //转 失败

          reader.onerror = function(error) {

            reject(error);

          };　　　　　 //转 结束  咱就 resolve 出去

          reader.onloadend = function() {

            resolve(fileResult);

          };

        });

      },